Biological control of Rumex obtusifolius and Rumex crispus by goat grazing

摘要: Rumex obtusifolius and crispus are problematic grassland weedy species, particularly under conditions of organic farming. They avoided by cattle horses, but they can be grazed goats. The aim this study was to investigate the effectiveness continuous goat grazing moderate intensity on R. control. In 2008, 40 seedlings each species were transplanted into pasture that goats (crossbreed Czech white × brown) target sward height 7–10 cm. number leaves, proportion leaves mortality plants monitored over following 4 years. per plant higher for than crispus. maximal 10 5, respectively. generally ranged from 10% 80%. No fertile recorded during experiment, as totally prevented flowering both species. level at start fourth season 70% 87% crispus, respectively, no survived season. It concluded a is carried out years seems an effective method non-chemical control in grassland.